1. Whoever teched your car let you down. You shouldn't start a track event with less than 50% brake material. Heat dissipation decreases greatly which increases the likelihood of brake fade, melted pads or loss of brakes (all bad things). It's a good habit to periodically check the pads yourself during the track day. it's easy with most Cayman wheels and it is an important safety factor.
2. Side to side brake wear should be about equal absent a brake problem, or perhaps significant
PSM intervention (although that's usually the rear brakes) regardless of a track that's harder on the tires on one side.
3. The sensors employ a normally closed ground circuit that is physically broken when the rotor cuts through the sensor body. That happens when the pad is very thin (far too worn for safe track use), but may initially cause an intermittent brake warning light much like moving a blown out light bulb may cause the fliment to temporarily close an otherwise broken connection. In addition, applying the brakes may also temporarily turn off the light as the rotor closes the connection. A little more wear and the light is on until the sensor is replaced or the sensor wires are sliced together, as is done by many track drivers.
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PSM - Porsche Stability Management
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While it can’t overcome the laws of physics, the revolutionary Porsche Stability Management (PSM) system does lend an added degree of balance and control to the Cayman’s mid-engine driving dynamics, inspiring surefooted confidence in corners and extreme situations.
A standard feature on the Cayman and Cayman S, PSM continuously monitors steering input, road speed, yaw velocity and lateral acceleration to calculate the actual direction of travel. If the car begins to steer off line, PSM instantly intervenes with precision brake inputs on individual wheels to help bring the car back onto the driver’s intended path.
If braking alone isn’t enough to correct the vehicle’s cornering line, PSM then calls on the Cayman’s engine management system, adjusting engine output as needed to help stabilize handling. PSM can also compensate in an instant for mid-corner changes in load resulting from deceleration or braking. When Sport mode is selected with the optional Sport Chrono Package, PSM’s threshold for intervention is raised, allowing for greater driver involvement. If you prefer driving without automatic PSM assistance, the system can be set to standby at any time. In this case, it will only intervene under heavy braking, where both front wheels exceed the ABS threshold.
For all of its technical ability, PSM goes virtually unnoticed in everyday driving situations, preserving the Cayman’s natural agility. |
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